Problem with lights in blender 2.81
Okay I looked at your file. There are some major problems, you are working on your lighting too soon. You have no materials applied to any of your objects. You need at least a basic material to setup lighting. Also your camera isn't placed very well to catch the action, it is barely getting the barrel at all. Fix these first then try to get the lighting. I would use a sunlamp, not the spot lamp.